3 ampere current was passed through an aqueous solution of an unknown salt of Pd for 1 hour. 2.97 g of Pd was deposited at cathode. Find n. (At.wt. of Pd = 106.4)

Answer

4

Explanation

Since `Pd^(n+) +n e rarr Pd`
For `Pd, (w)/(E) = (ixx t)/(96500), (2.977)/(106.4//n) = (3 xx 1 xx 60 xx 60)/(96500) n = 4`